Hombre S Regular Cab 4WD V6-4.3L (1999)
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The park lamps turn ON.
The following actions occur if the headlamp switch is set to the HEADLAMP position:
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The DRLs are OFF.
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The park lamps are ON.
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The headlamps are ON.
The following actions occur if the headlamp switch is set to the HEADLAMP position and the HIGH/LOW beam switch is toggled:
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The DRLs are OFF.
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The park lamps are ON.
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The headlamps are ON.
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The HIGH/LOW beams will toggle with the HIGH/LOW switch.
If the headlamp switch is set to the AUTO position and the and the ambient light level conditions change to DARK for 15 seconds, the BCM will turn
ON the headlamps.
DARK State
The following actions occur is the headlamp switch is set to the AUTO, PARK LAMP or HEADLAMP position:
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The DRLs are OFF.
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The park lamps are ON.
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The headlamps are ON.
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If you toggle the HIGH/LOW beam switch, the HIGH/LOW beams will toggle.
The following conditions exist if the ignition switch is in the OFF position and the park brake is set:
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The DRLs are OFF.
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The park lamps are OFF.
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The headlamps are OFF.
If you turn the ignition switch to the RUN position, the auto headlamps are defeated. If you release the park brake, the auto headlamps will function. If
you set the park brake again, the headlamp function will not change.
If the headlamp switch is in the AUTO position and the ambient light level conditions change to LIGHT for 20 seconds, the BCM will turn OFF the
headlamps.
Front Fog Lamps
The front fog lamps are a controlled option of the BCM. The BCM will command the fog lamp relay ON if the following actions occur:
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The park lamps are ON.
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The High beams are OFF.
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You press the fog lamp switch.
The front fog lamp relay will turn the front fog lamps ON. The front fog lamp switch is a momentary switch. Only one transition occurs each time the
front fog lamp switch is pressed. Press the front fog lamp switch in order to turn ON the front fog lamps. Toggle the HIGH/LOW beam switch in order
to toggle the front fog lamps ON/OFF
Passlock (TM) System
The Passlock (TM) theft deterrent system is designed to prevent vehicle operation if an incorrect ignition key is used to start the vehicle. The ignition key
will allow the lock cylinder to turn. The Passlock (TM) sensor, which is located inside of the ignition switch assembly, sends a code to the BCM. If the
BCM receives the correct code from the Passlock (TM) sensor, the BCM will send a password to the vehicle control module (VCM) or the powertrain
control module (PCM). The message will allow the vehicle to start. Refer to Theft Deterrent for more Passlock (TM) system information.
See: Accessories and Optional Equipment/Antitheft and Alarm Systems
Battery Rundown Protection
The battery run down protection provides protection against the following conditions:
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Parasitic loads
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Excessive battery drain
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High current loads that are related to the courtesy lamp circuit
The battery run down protection will also protect the battery against being run down from the courtesy lamp circuit to a level that will prevent the vehicle
from starting. The BCM will turn OFF the courtesy lamp circuit when the following actions occur:
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The ignition switch is turned from the RUN position to the OFF position.
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20 minutes elapses without a lamp request input.
